<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="en">
  <head>
<meta name="copyright" content="Copyright (c) IBM Corporation and others 2000, 2008. This page is made available under license. For full details see the LEGAL in the documentation book that contains this page." >
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <meta http-equiv="Content-Style-Type" content="text/css">
    <link rel="stylesheet" href="../book.css" charset="ISO-8859-1" type="text/css">
    <title>
      Assigning the default JRE for the workbench
    </title>
    <link rel="stylesheet" href="../book.css" charset="ISO-8859-1" type="text/css">
    <script language="JavaScript" src="PLUGINS_ROOT/org.eclipse.help/livehelp.js" type="text/javascript"> </script>
  </head>
  <body>
    <h1>
      Assigning the Default JRE for the Workbench
    </h1>
    
<p> The default JRE is used for compiling and launching Java programs in all projects 
  unless you specifically <a href="task-choose_config_jre.htm">override the default JRE</a> on a project's build path or 
  on a launch configuration.</p>
    <p>
      Here is how you can change the default JRE:
    </p>
    <ol>
      <li>
        Open the
        <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.jdt.debug.ui.preferences.VMPreferencePage)")'>
        <img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" alt="Opens the Installed JREs preference page">
        <strong>Java &gt; Installed JREs</strong></a> preference page.
      </li>
      <li>
        Check the box on the line for the JRE that you want to assign as the default JRE in your workbench.
        If the JRE you want to assign as the default does not appear in the list, you must <a href="task-add_new_jre.htm">add it</a>.
      </li>
      <li>
        Click <strong>OK</strong>.
      </li>
    </ol>
    
<strong>Note</strong>: Changing the default JRE may cause a build to occur if 
you have auto build enabled (<strong>Project &gt; Build Automatically</strong> 
or in the <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.ui.preferencePages.Workspace)")'> 
<img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" alt="Opens the Workspace preference page"> <strong>General &gt; 
Workspace</strong></a> preference page). 

   <h3 class="related">Related Concepts</h3>
      <a href="../concepts/concept-jdt.htm">Java development tools (JDT)</a>
    <h3 class="related">Related Tasks</h3>
      <a href="../tasks/tasks-JREs.htm">Working with JREs</a><br>
      <a href="../tasks/task-add_new_jre.htm">Adding a new JRE definition</a><br>
      <a href="tasks-deleteJRE.htm">Deleting a JRE definition</a><br>
      <a href="../tasks/task-choose_config_jre.htm">Choosing a JRE for launching a project</a>
    <h3 class="related">Related References</h3>
      <a href="../reference/preferences/java/debug/ref-installed_jres.htm">Installed JREs preference page</a>
  </body>
</html>

